-- Dec 1997GRASS 4.2 released by Baylor University - The first "GRASS Research Group" takes control of GRASS Development from USA-CERL. This first new release in 4 years adds numerous programs and extended sites format. Popularity increases with academic community.
-- Jul 1991GRASS 4.0 released through Internet - popularity grows with universities, business and government agencies. Vector Library changed significantly from the library used in GRASS 3.1
-- --- 1982 Fort Hood Information System (FHIS) (Vax 11/780): Goran et al. (1983). Fort Hood Geographic Information System: Pilot System Development and User Instructions. Technical Report N-154, USA-CERL, Champaign, IL